diff --git a/app/admin/controller/SchoolController.php b/app/admin/controller/SchoolController.php
index 77f62de..f521eb8 100644
--- a/app/admin/controller/SchoolController.php
+++ b/app/admin/controller/SchoolController.php
@@ -15,8 +15,8 @@ class SchoolController extends AdminBaseController{
 
         if($this -> request -> isPost()){
            if(!empty($_POST['start_time']) && !empty($_POST['end_time'])){
-                $start_time = $_POST['start_time'];
-                $end_time = $_POST['end_time'];
+                $start_time = strtotime($_POST['start_time']);
+                $end_time = strtotime($_POST['end_time']);
                 $where['create_time'] = [['>=',$start_time],['<=',$end_time]];
            }
            if(!empty($_POST['keyword'])){